Files Transferred Over Shell Protocol - Protocol Messages

Protocol Messages

Client sends text requests of the following form:

#FISH_COMMAND arguments... equivalent shell commands, which may be multi-line

Fish commands are all defined, shell equivalents may vary. Fish commands always have priority: the server is expected to execute a fish command if it understands it. If it does not, however, it can try and execute a shell command. When there is no special server program, Unix shell ignores the fish command as a comment and executes the equivalent shell command(s).

Server replies are multi-line, but always end with

### xyz

line. ### is a prefix to mark this line, xyz is the return code. Return codes are superset to those used in ftp. The codes 000 and 001 are special, their meaning depends on presence of server output before the end line.